Build HintInfo for a field at inputId given its declared constraints. Returns undefined when no constraint message would be produced — the Svelte renderers then skip emitting the hint element entirely so consumers don't see an empty <small>.
inputId
undefined
<small>
Build HintInfo for a field at
inputIdgiven its declared constraints. Returnsundefinedwhen no constraint message would be produced — the Svelte renderers then skip emitting the hint element entirely so consumers don't see an empty<small>.